public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
* [PATCH RFC/RFT 1/7] regulator: core: Allow drivers to set voltage mapping table in regulator_desc
@ 2012-05-20  2:30 Axel Lin
  2012-05-20  2:31 ` [PATCH RFC/RFT 2/7] regulator: ab3100: Use regulator_list_voltage_table() Axel Lin
                   ` (6 more replies)
  0 siblings, 7 replies; 12+ messages in thread
From: Axel Lin @ 2012-05-20  2:30 UTC (permalink / raw)
  To: linux-kernel
  Cc: Lee Jones, Linus Walleij, Mark Brown, Liam Girdwood,
	Anuj Aggarwal, Marek Szyprowski

Some regulator hardware use table based mapping can set volt_table in
regulator_desc and use regulator_list_voltage_table() for their list_voltage
callback.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
---
 drivers/regulator/core.c         |   25 +++++++++++++++++++++++++
 include/linux/regulator/driver.h |    5 +++++
 2 files changed, 30 insertions(+), 0 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index faa0532..0b15587 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1880,6 +1880,31 @@ int regulator_list_voltage_linear(struct regulator_dev *rdev,
 EXPORT_SYMBOL_GPL(regulator_list_voltage_linear);
 
 /**
+ * regulator_list_voltage_table - List voltages with table based mapping
+ *
+ * @rdev: Regulator device
+ * @selector: Selector to convert into a voltage
+ *
+ * Regulators with table based mapping between voltages and
+ * selectors can set volt_table in the regulator descriptor
+ * and then use this function as their list_voltage() operation.
+ */
+int regulator_list_voltage_table(struct regulator_dev *rdev,
+				 unsigned int selector)
+{
+	if (!rdev->desc->volt_table) {
+		BUG_ON(!rdev->desc->volt_table);
+		return -EINVAL;
+	}
+
+	if (selector >= rdev->desc->n_voltages)
+		return -EINVAL;
+
+	return rdev->desc->volt_table[selector];
+}
+EXPORT_SYMBOL_GPL(regulator_list_voltage_table);
+
+/**
  * regulator_list_voltage - enumerate supported voltages
  * @regulator: regulator source
  * @selector: identify voltage to list
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index b0432cc..8022638 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -170,6 +170,7 @@ enum regulator_type {
  *
  * @min_uV: Voltage given by the lowest selector (if linear mapping)
  * @uV_step: Voltage increase with each selector (if linear mapping)
+ * @volt_table: Voltage mapping table (if table based mapping)
  *
  * @vsel_reg: Register for selector when using regulator_regmap_X_voltage_
  * @vsel_mask: Mask for register bitfield used for selector
@@ -189,6 +190,8 @@ struct regulator_desc {
 	unsigned int min_uV;
 	unsigned int uV_step;
 
+	const unsigned int *volt_table;
+
 	unsigned int vsel_reg;
 	unsigned int vsel_mask;
 	unsigned int enable_reg;
@@ -271,6 +274,8 @@ int regulator_mode_to_status(unsigned int);
 
 int regulator_list_voltage_linear(struct regulator_dev *rdev,
 				  unsigned int selector);
+int regulator_list_voltage_table(struct regulator_dev *rdev,
+				  unsigned int selector);
 int regulator_map_voltage_linear(struct regulator_dev *rdev,
 				  int min_uV, int max_uV);
 int regulator_map_voltage_iterate(struct regulator_dev *rdev,
-- 
1.7.5.4




^ permalink raw reply related	[flat|nested] 12+ messages in thread
end of thread, other threads:[~2012-05-21 16:06 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-05-20  2:30 [PATCH RFC/RFT 1/7] regulator: core: Allow drivers to set voltage mapping table in regulator_desc Axel Lin
2012-05-20  2:31 ` [PATCH RFC/RFT 2/7] regulator: ab3100: Use regulator_list_voltage_table() Axel Lin
2012-05-21  9:16   ` Linus Walleij
2012-05-20  2:33 ` [PATCH RFC/RFT 3/7] regulator: ab8500: " Axel Lin
2012-05-21 10:43   ` Linus Walleij
2012-05-21 11:17     ` Mark Brown
2012-05-20  2:34 ` [PATCH RFC/RFT 4/7] regulator: lp3971: " Axel Lin
2012-05-20  2:36 ` [PATCH RFC/RFT 5/7] regulator: lp3972: " Axel Lin
2012-05-20  2:37 ` [PATCH RFC/RFT 6/7] regulator: tps6105x: " Axel Lin
2012-05-21 16:06   ` Linus Walleij
2012-05-20  2:39 ` [PATCH RFC/RFT 7/7] regulator: tps6507x: " Axel Lin
2012-05-20 21:48 ` [PATCH RFC/RFT 1/7] regulator: core: Allow drivers to set voltage mapping table in regulator_desc Mark Brown

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox